Coordinate measuring device

A coordinate measuring device is provided comprising a support, which is fastened on a base so it is rotatable about a first axis of rotation, a beam deflection unit, which is fastened on the support so it is rotatable about a second axis of rotation, which is essentially orthogonal to the first axis of rotation, a first bearing for the rotatable mounting of the beam deflection unit on the support, and a second bearing for the rotatable mounting of the support on the base, wherein the beam deflection unit comprises an optical distance measuring device having at least one distance meter for measuring the distance to the measuring aid by means of measurement radiation, the first bearing comprises a first angle encoder and the second bearing comprises a second angle encoder, and a first inclination sensor is provided on the base,and is characterized according to the invention by a second inclination sensor on the support, wherein the first inclination sensor and the second inclination sensor are each embodied to capture an inclination in at least two essentially orthogonal directions in relation to the direction of gravity and to output inclination data, and by an analysis and control unit, which is embodied, for the purpose of self-monitoring and/or self-calibration of the coordinate measuring device, to capture and analyze the inclination data of the two inclination sensors